Home / 820,291.40-1,230,782.70-446,582.60

Finding the Fourth Proportional to 820,291.40, 1,230,782.70 and 446,582.60

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Solution

The fourth proportional to 820,291.40, 1,230,782.70 and 446,582.60 is: 670,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,291.40 : 1,230,782.70 = 446,582.60 : x
  2. Step 2: Convert to fraction form
    820,291.40/1,230,782.70 = 446,582.60/x
  3. Step 3: Cross multiply
    820,291.40x = 1,230,782.70 × 446,582.60
  4. Step 4: Simplify right side
    820,291.40x = 549,646,138,201.02
  5. Step 5: Solve for x
    x = 549,646,138,201.02/820,291.40
  6. Step 6: Final answer
    x = 670,062.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.